863922321 has 32 divisors (see below), whose sum is σ = 1320451200. Its totient is φ = 557979840.

The previous prime is 863922289. The next prime is 863922347. The reversal of 863922321 is 123229368.

It is not a de Polignac number, because 863922321 - 2⁵ = 863922289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (863922121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106435 + ... + 114263.

It is an arithmetic number, because the mean of its divisors is an integer number (41264100).

Almost surely, 2^863922321 is an apocalyptic number.

It is an amenable number.

863922321 is a deficient number, since it is larger than the sum of its proper divisors (456528879).

863922321 is a wasteful number, since it uses less digits than its factorization.

863922321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966 (or 7960 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 863922321 is about 29392.5555370743. Note that the first 4 decimals coincide. The cubic root of 863922321 is about 952.4120868703.

The spelling of 863922321 in words is "eight hundred sixty-three million, nine hundred twenty-two thousand, three hundred twenty-one".